The child with recurrent infections.
D000361:Agammaglobulinemia / Q000276:immunology; D000917:Antibody Formation; D000918:Antibody Specificity; D001402:B-Lymphocytes; D001424:Bacterial Infections / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D005260:Female; D006801:Humans; D006968:Hypersensitivity, Delayed; D007122:Immunoelectrophoresis; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007153:Immunologic Deficiency Syndromes / Q000150:complications* / Q000175:diagnosis*; D007223:Infant; D007231:Infant, Newborn; D007239:Infections / Q000209:etiology* / Q000276:immunology*; D008297:Male; D012008:Recurrence; D013601:T-Lymphocytes; D014777:Virus Diseases / Q000276:immunology
D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M